Die



Sept. 20, 1938.

W. J. 'SULLIVAN DIE Filed Aug. 13, 1936 x Fig-1- 2 Sheets-Sheet l hp 7William J. :Sullimwz 0/4 Patented Sept. 20, 1938 'rrer OFFHE DliEApplication August'13, 1936, Serial No. 95,828

8 Glaima. (Cl. 164-93) This invention relates generally to dies andparticularly to dies of the perforating'type such as those generallyemployed in the manufacture of shoes having perforated designs therein.

Dies of the kind referred to have, as a general rule, been made as acomposite article, a separate complete die being provided for eachdifferent shape of perforated design. In a few instances, however, suchdies have been arranged to receive a variety of cutting elements so thatby the exchange of a few parts the die might be converted so as toaccomplish different perforated designs.

The object of the present invention generally stated is to provide a dieof the kind referred to constructed and arranged so that the partsthereof may be readily exchanged so as to convert the die and adapt itto perform different perforating operations.

A further object of the present invention is to provide a die of thekind'referred to wherein the conventional stripper plate may be liftedor removed with facility.

Another object of the present invention is to provide a die of the kindreferred to with a ganging device and means for holding such gaugingdevice in association with the die whereby it may be readily removed andexchanged.

Other objects will become apparent to those skilled in the art when thefollowing description is read in connection with the accompanyingdrawings in which:

Figure l is a plan view of a die constructed in accordance with thepresent invention.

Figure 2 is a perspective view of the die shown in Figure 1 with thestripper plate thereof lifted.

Figure 3 is a sectional view taken along iine 3-3 of Figure 1 showingthe arrangement of the stripper plate, its holding device and thecutting element. 7

Figure 4 is a sectional view taken along line 4-4 of Figure 1.

Figure 5 is a sectional view taken along line 55 of Figure 1.

In accordance with the present invention a die of the perforating typeis provided with a base upon which may be mounted a cutting element anda stripper plate for cooperating with the cutting element. The presentinvention particularly contemplates that the cutting element as well asits cooperating stripper plate may be readily removed from the base soas to permit exchange of these parts for similar parts adapted toperforate different designs. In accordance with the present inventionthe cutting element of the die is constructed and arranged so as to besecurely operation with the die.

per plate from position. A further feature of the present inventionresides in the provision of an exchangeable gauging device for use uponthe die so as to adapt the die to perforation of a variety of sizes orshapes of shoe parts in which the same perforated design may be desired.

Referring now to the drawings, for an illustra- [10 tive'embodiment ofthe present invention the die may comprise a base I upon which ismounted a cutting element 2. In the embodiment shown the cutting elementcomprises a plurality of perforating tubes 3 in the center of which is alozenge shaped cutter ll. In the embodiment shown the cutting element 2is held upon a pad 5 which latter is secured to base I. Pad 5 may beprovided with a plurality of studs arranged to receive clamps B and nutsI. The nuts 7 may be knurled or otherwise provided for convenientmanipulation. With the arrangement just described and particularly ifthe clamps 6 are formed of spring metal and so shaped as to resisttightening of nuts 1 when the jaw parts 8 thereof are disposed over thesupporting plate of cutting element 2 as shown clearly in Figure 2 itwill be under: stood that upon tightening of nuts 3' cutting element 2is securely held down against pad 5. In

order to prohibit sidewise displacement of cutting element 2 the lattermay be provided with two or more apertures such as 9 into which pinsextending upwardly from pad 5 may fit. While the arrangement justdescribed securely holds cutting element 2 in the desired position uponpad 5, it l will be understood that by merely loosening nuts 7 clamps 5may be turned so as to release the cutting element and permitreplacement thereof by another having apertures positioned as theapertures 9 for use upon the same basicdie parts. K

A stripper plate I0 is also provided for co- In accordance with theusual practice the stripper plate if] may have a series of openings I land i2 therein slightly larger than perforating tubes 3 and cutter 4respectively. A stripper plate it! may be mounted so as to yield underpressure and permit openings H and I2 to move down over perforatingtubes 3 and cutter i respectively. In order to accomplish this aseranged to provide a releasable fastening to co--55 operate with alatch l6 upon the bottom of stripper plate I0.

Each of posts I3, l4 and I5 may conveniently be composed of telescopingparts I! and I8 having flanges l9 and 20 respectively or other suitablemeans to prevent the inside part I! from being ejected from the outsidetelescoping part IS. A spring 21 may then be suitably mounted withintelescoping parts l1 and 18 so as to bias these parts into theirextended position as shown in Figure 4, but nevertheless to permitmovement thereof upon the exertion of pressure downwardly upon stripperplate l0.

As remarked above, post l5 may have its upper portion arranged tocooperate with latch I6 and to this end may be formed with a head 22having a groove 23 therein for cooperation with latch I6. In theembodiment shown latch l6 comprises a simple spring, one end of which ismounted in a block 24 having an aperture 25 for the reception of head22. The other end of the spring may be curled as shown in Figure 2 orotherwise arranged for convenient manipulation. When the stripper plateis in its closed position as shown in section in Figure 3, it will beunderstood that latch l6 fits into groove 23 so as to hold the partsagainst separation, but by mere flexing of latch Hi the parts arereleased so that the stripper plate may be lifted on its hinges as shownin Figure 2.

A gauging device 26 having a gauging surface 21 may be provided. Inaccordance with the present invention the gaugingdevice 26 is readilyremovable and conveniently exchangeable. In order to accomplish this thegauging device 26 may be provided with a pair of apertures 28 eacharranged to receive and cooperate with posts 29 upstanding from theupper surface of stripper plate ID in order to prevent lateraldisplacement of the gauging device upon the stripper plate. In order tomaintain the gauging device against removal but yet facilitate itsexchange a stud 30 may be provided downwardly extending therefrom forcooperation with aperture 3| in stripper plate In and engagement with aspring clasp 32 therebeneath so that the spring clasp 32 impositivelyholds stud 30 against removal. In the embodiment shown stud 30 isprovided with a bulbous end into the recess beyond which the parts ofspring clasp 32 may engage, thus holding stud 30 in position. With theparts thus arranged, however, by the exertion of a sufficient force inan upward direction upon gauging device 26 the elements of spring clasp32 will be cammed outwardly by the bulbous'surface of stud 30, thusreleasing the latter. In order to facilitate the application of suchupward pressure upon gauging device 26 the corners thereof may be upsetslightly in order to provide lips 33 beneath which the pressure of thefingers may be applied.

While in the foregoing description one illustrative embodiment of a dieconstructed in accordance with the present invention has been disclosed,it will be understood that the several features of the die illustratedin the accompanying drawings may be employed independently of the otherfeatures to the end that certain of the parts may be removed orexchanged with facility while other parts may remain a permanent partofthe die, it will nevertheless be apparent that with the various parts,including the gauging device, stripper plate and cutting element,arranged and secured in position as shown, a die is provided which maybe modified and employed for various perforating operations with aminimum of inconvenience.

It is realized that many modifications in the precise arrangement shownin the accompanying drawings will present themselves to those skilled inthe art and it is further realized that various features of the presentinvention may be advantageously employed independently of other featuresand consequently it is to be distinctly understood that suchmodifications and the use of such individual features andsubcombinations .of features as do not depart from the spirit of thisinvention are, although not specifically described herein, contemplatedby and within the scope of the claims.

Having thus described the invention what is claimed is:

1. A die of the kind described comprising, a base, a cutting elementmounted upon the base, compressible posts carried by the base, and astripper plate hinged to some of said posts and releasably connected toanother of said posts.

2. A die of the kind described comprising, a base, a cutting elementmounted upon the base, compressible posts carried by the base, and astripper plate hinged to some of said posts and a latch cooperating withanother of said posts to connect the stripper plate thereto.

3. A die of the kind described comprising, a base, a cutting elementmounted upon the base, compressible posts carried by the base, and astripper plate hinged to some of said posts and a spring latchcooperating with another of said posts to connect the stripper platethereto.

4. A die of the kind described comprising, a base, a cutting elementmounted upon the base,

studs on said base, jaw members on each of said studs having a partengageable with said cutting element, and means for drawing said jawsinto engagement with said cutting element to hold the same against thebase, compressible posts carried by the base, and a stripper platehinged to said posts.

5. A die of the kind described comprising, a base, a cutting elementmounted upon the base, studs on said base, spring jaw members on each ofsaid studs having a part engageable with said cutting element, and meansfor drawing said jaws into engagement with said cutting element to holdthe same against the base.

6. A die of the kind described comprising, a base, a cutting elementmounted upon the base, studs on said base, jaw members on each of saidstuds having a part engageable with said cutting element, and means fordrawing said jaws into engagement with said cutting element to hold thesame against the base, compressible posts carried by the base, and astripper plate mounted on said posts, a gauge having a post arranged tocooperate with an aperture in said stripper plate, and a yieldable latchengageable with the end of said post beneath said stripper plate.

'7. A die comprising a stripper plate, a gauge plate, one of said plateshaving a post with a spheroidal end, the other of said plates having anaperture for cooperating with said post and a spring clasp for engagingsaid spheroidal end when the post is in said aperture.

8. A. die comprising, a stripper plate, a gauge plate, said platesrespectively having cooperating posts and apertures, and resilient meanscarried by one of said plates for impositively engaging and latching apost carried by the other plates in position in the correspondingapertures.

WILLIAM J. SULLIVAN.

